CVE-2026-57916

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 34/100
Published: 2026-07-27 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Active
S: X
AT: None
VC: None
VI: Low
VA: None

Description

proCertum SmartSign opens Certificate Practice Statement (CPS) URI without schema validation. An attacker can prepare arbitrary certificate with CPS URI pointing to a local executable file or any URL, sign a document with it, and send it to the victim. When the victim opens the document in the application, the specified file will be executed (or webpage will be opened). This issue was fixed in version 9.4.3.90.

Weakness Classification (1)

Bug Bounty Relevance

34 / 100
✓ No authentication
✓ Low complexity

CVSS Score

4.6 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.11%
Raw Score 0.001110
Percentile 1.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00111
2026-10-28
0.00111

Intelligence Sources

nvd ref →